CN107010024B - Electric braking system - Google Patents
Electric braking system Download PDFInfo
- Publication number
- CN107010024B CN107010024B CN201611181801.8A CN201611181801A CN107010024B CN 107010024 B CN107010024 B CN 107010024B CN 201611181801 A CN201611181801 A CN 201611181801A CN 107010024 B CN107010024 B CN 107010024B
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- hydraulic
- valve
- flow path
- braking system
- chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4068—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system the additional fluid circuit comprising means for attenuating pressure pulsations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/176—Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
- B60T8/4086—Systems with stroke simulating devices for driver input the stroke simulating device being connected to, or integrated in the driver input device
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Electromagnetism (AREA)
Abstract
A kind of electric braking system includes: master cylinder, is configured to connect to the reservoir of oil in reserve and is configured as being generated according to the pedal force of brake pedal hydraulic；Stop valve is installed in and master cylinder is connected at the standby flow path of wheel cylinder；Simulator comprising simulation chamber and analog valve, the simulation chamber are connected to master cylinder at the front end of stop valve to provide reaction force according to the pedal force of brake pedal, and the analog valve is arranged at the flow path that master cylinder is connected to simulation chamber；Hydraulic supply unit is configured to respond to the electric signal of the pedal displacement sensor of the displacement of sensing brake pedal and operates；And damping member, it is arranged at the flow path that hydraulic chamber is connected to the front end of stop valve, wherein the pressure fluctuation generated in hydraulic chamber is delivered to brake pedal under anti-lock brake system abs mode by the damping member.
Description
Technical field
Embodiment of the present disclosure is related to electric braking system, and more particularly, being related to one kind can be in anti-lock brakes
According to the electric braking system of the request sensing pressure fluctuation of driver while system (ABS) is operated.
Background technique
Braking system for braking must be installed on vehicle, had been presented for recently stronger and more stable for providing
The various systems of braking.
For example, in the presence of including for preventing the anti-lock brake system (ABS) of wheel-slip while braking, being used for
Vehicle prevents driving wheel from skidding braking pull-in control system (BTCS) when unintentionally or intentionally accelerating, by by ABS with lead
Draw control combination to control hydraulic electronic stability control (ESC) system of driving condition etc. steadily to maintain vehicle of braking
Braking system.
In general, electric braking system includes hydraulic supply unit, hydraulic supply unit steps down on brake pedal in driver
When from the pedal displacement sensor of the displacement of sensing brake pedal receive the braking intention of driver as electronic signals, then
It is supplied to wheel cylinder hydraulic.
Electric braking system configured with this hydraulic supply unit is public in European registration patent No.EP 2 520 473
It opens.According to the disclosure in the document, hydraulic supply unit is configured such that according to the pedal force of brake pedal come operation motor
To generate brake pressure.At this point, by the way that the rotary force of motor is converted to linear motion to generate braking pressure to piston pressurization
Power.
In addition, the electric braking system includes that can provide reaction force to driver according to the pedal force of brake pedal
Simulator.At this point, simulator is connected to oil conservator, analog valve is installed in the oil stream that simulator is connected to oil conservator
At road.Analog valve is arranged to be blocked when operating when electric braking system exception, and hydraulic defeated by what is discharged from master cylinder
It send to wheel cylinder, so that executable stablize braking.
This electric braking system has a structure in which, wherein providing the pedal according to brake pedal by simulator
The reaction force of power, and wheel cylinder is delivered to so that the pressure generated in ABS control period for hydraulic by hydraulic supply unit
Power pulsation is not transported to driver.Therefore, although driver requests to pulse to its discharge pressure in ABS control period, setting
Stop valve at the flow path that master cylinder is connected to wheel cylinder should maintain blocking state in order to stablize braking, to there is pressure
The problem of power pulsation is not delivered to driver.
Existing technical literature
2 520 473 A1 (the Honda Motor of European registration patent No.EP in (patent document) on November 7th, 2012
Co., Ltd. (Honda Motors Co.)).
Summary of the invention
Therefore, the one side of the disclosure provides a kind of electric braking system, can will generate while ABS is operated
Pressure fluctuation be delivered to driver.
The additional aspect of the disclosure will illustrate partly in the following description, and partly will be aobvious and easy from the description
See, or the learning by doing of the disclosure can be passed through.
According to an aspect of the present invention, a kind of electric braking system is provided, which includes: master cylinder,
It is configured to connect to the reservoir of oil in reserve and is configured as being generated according to the pedal force of brake pedal hydraulic；Cutting
Valve is installed in and master cylinder is connected at the standby flow path of wheel cylinder；Simulator comprising simulation chamber and analog valve, institute
State simulation chamber be connected at the front end of stop valve master cylinder with according to the pedal force of brake pedal provide reaction force and by
It is configured to oil in reserve, the analog valve, which is arranged on, to be connected to simulation chamber for master cylinder or simulation chamber is connected to reservoir
Flow path at；Hydraulic supply unit is configured to respond to the electricity of the pedal displacement sensor of the displacement of sensing brake pedal
Signal and operate, and what will be generated and hydraulic chamber to the reservoir for being connected to oil in reserve pressurizes hydraulic be delivered to wheel
Cylinder；And damping member, it is arranged at the flow path that hydraulic chamber is connected to the front end of stop valve, wherein the damping
The pressure fluctuation generated in hydraulic chamber is delivered to brake pedal under anti-lock brake system (ABS) mode by component.
In addition, the side of the damping member is connected to hydraulic chamber and its other side is connected to simulation chamber.
It is connected to the flow path of reservoir in addition, the analog valve is arranged to make to simulate in the normal mode chamber and beats
It opens, makes that the flow path closing that chamber is connected to reservoir will be simulated under abnormal patterns, and under abs mode selectively
It opens or closes to convey required pressure fluctuation.
In addition, the electric braking system further include: hydraulic control unit comprising be connected to hydraulic pressure supply dress by flow path
The first hydraulic circuit and the second hydraulic circuit set, and be configured as receiving from the hydraulic with control of hydraulic supply unit discharge
It is transported to the hydraulic flowing for the wheel cylinder being arranged at each wheel；And electronic control unit, it is configured as based on liquid
The displacement information of information and brake pedal is pressed to control motor and valve, wherein the master cylinder, which has, is connected to the first hydraulic circuit
The first hydraulic port and be connected to the second hydraulic port of the second hydraulic circuit, and wherein, the hydraulic supply unit is matched
It is set to so that motor is operated in response to the electric signal that exports from pedal displacement sensor, and by turning the rotary force of motor
It is hydraulic to generate to be changed to linear motion.
In addition, the hydraulic control unit includes: first entrance valve to the 4th inlet valve, it is respectively set at wheel cylinder
It upstream side and is configured as control flow direction and is mounted on the hydraulic of wheel cylinder at each wheel；First discharge valve to the 4th drainage
Valve is configured to control the hydraulic flowing discharged from wheel cylinder；And first balanced valve and the second balanced valve, difference
First entrance valve is arranged on to the 4th inlet valve and the first discharge valve between the 4th discharge valve, wherein first balance
Valve is connected to the two entrances valve in first entrance valve to the 4th inlet valve, and second balanced valve is connected to remaining two and enters
Mouth valve.
In addition, one in the two entrances valve being connected to each other by the first balanced valve and by the second balanced valve each other
An opening in the two entrances valve of connection, so that hydraulic be transported to the wheel cylinder being mounted at each wheel.
In addition, the first entrance valve to the 4th inlet valve using it is normally closed and when receiving opening signal opening
Normal-closed electromagnetic valve configure.
In addition, first discharge valve to the 4th discharge valve using it is normally closed and when receiving opening signal opening
Normal-closed electromagnetic valve configure.
In addition, first balanced valve and the second balanced valve are using normally open and when receiving from electronic control unit
The normal-open electromagnetic valve closed when shutdown signal configures.
In addition, the electric braking system further include: the first standby flow path is configured as when electric braking system exception
The first hydraulic port is connected to the first balanced valve directly to supply oil to wheel cylinder when ground operates；Second standby flow path, is configured
For the second hydraulic port is connected to the second balanced valve；First stop valve is arranged at the first standby flow path and is configured
For the flowing of control oil；And second stop valve, it is arranged at the second standby flow path and is configured as the stream of control oil
It is dynamic.
In addition, first stop valve and the second stop valve are using normally open and when receiving from electronic control unit
The normal-open electromagnetic valve closed when shutdown signal configures.
In addition, the hydraulic supply unit includes: motor, it is configured to respond to the electric signal of pedal displacement sensor
And generate rotary force；Power converting unit is configured as the rotary force of motor being converted to linear motion；Hydraulic piston,
It is connected to power converting unit and is configured as executing linear motion；Hydraulic chamber is arranged to make hydraulic piston at it
It is middle to slide and the first hydraulic circuit and the second hydraulic circuit are connected to by hydraulic flow path；And hydraulic spring grease cup, it is set
It inside hydraulic chamber and is configured as being elastically supported hydraulic piston, wherein the hydraulic chamber is configured as passing through oil
Mouth is connected to reservoir and receives oil.
In addition, the outlet side in hydraulic chamber forms and is connected to the intercommunicating pore of reservoir, and check-valves is arranged on company
Be connected at the flow path of the intercommunicating pore and reservoir and be configured such that oil can be flowed to from reservoir hydraulic chamber and
Oil is prevented to flow to reservoir from hydraulic chamber.
In addition, rear end and the storage of the simulation chamber of simulator is concurrently arranged in the analog valve and simulation check-valves
At the flow path that storage is connected to.
In addition, the analog valve using normal-closed electromagnetic valve that is normally closed and being opened when receiving opening signal come
Configuration.
Detailed description of the invention
Fig. 1 is the hydraulic of the non-brake state for the electric braking system for showing a preferred embodiment according to the disclosure
Loop diagram.
Fig. 2 is show state that electric braking system in accordance with one embodiment of the present disclosure normally operates hydraulic
Loop diagram.
Fig. 3 is to show the case where brake force is discharged under the on-position established when electric braking system normally operates
Hydraulic circuit diagram.
Fig. 4 and Fig. 5 is the hydraulic circuit diagram for showing the case where corresponding wheel cylinder is only braked while ABS is operated.
Fig. 6 is to show electric braking system to be operated under drainage mode to discharge the hydraulic of the hydraulic situation of corresponding wheel cylinder
Loop diagram.
Fig. 7 is hydraulic circuit diagram the case where operation with showing electric braking system exception.
The description of label
10: brake pedal 11: pedal displacement sensor
20: master cylinder 30: reservoir
40: clip brake 50: simulator
54: analog valve 100: hydraulic supply unit
110: hydraulic chamber 120: hydraulic piston
130: power converting unit 140: motor
200: 201: the first hydraulic circuit of hydraulic control unit
202: the second hydraulic circuits 210: main hydraulic flow path
221: first entrance valve 222: second entrance valve
223: 224: the four inlet valve of third inlet valve
231: the first discharge valve, 232: the second discharge valve
233: 244: the four discharge valve of third discharge valve
241: the first balanced valve, 242: the second balanced valve
251: the first standby flow path, 252: the second standby flow path
261: the first stop valve, 262: the second stop valve
300: damping member 315: pulsation flow path
Specific embodiment
Hereinafter, will be described in detail with reference to the accompanying drawings embodiment of the present disclosure.The embodiment being described below be provided with
The spirit of the disclosure is fully conveyed to those skilled in the art.The present disclosure is not limited to embodiments disclosed hereins, and can
It realizes in other forms.In the accompanying drawings, some parts unrelated with description will be omitted and will not show so as to clear
Ground describes the disclosure, and the size of component can also slightly be exaggerated to help to understand.
Fig. 1 is the hydraulic of the non-brake state for the electric braking system for showing a preferred embodiment according to the disclosure
Loop diagram.
Referring to Fig.1, electric braking system generally includes: master cylinder 20 is used to generate hydraulic；Reservoir 30, is attached to
The top of master cylinder 20 is with oil in reserve；Input lever 12 is used to pressurize to master cylinder 20 according to the pedal force of brake pedal 10；Wheel cylinder
40, it is used to receive the hydraulic braking to execute each wheel RR, RL, FR and FL；Pedal displacement sensor 11 is used to sense
The displacement of brake pedal 10；And simulator 50, it is used to provide reaction force according to the pedal force of brake pedal 10.
Master cylinder 20 can be configured to include that at least one chamber is hydraulic to generate.As shown in the figure, master cylinder 20 can be configured
Being includes that two chambers 25a and 25b, first piston 21a and second piston 22a can be respectively set at two chambers 25a and 25b
Place, first piston 21a and input lever 12 can be in contact with each other.Even if the reason of two chambers are arranged in master cylinder 20 is in order to when two
One in a chamber also ensures that safety when breaking down.For example, the first chamber in two chambers be connected to off-front wheel FR and
Left rear wheel RL, remaining chamber are connected to the near front wheel FL and off hind wheel RR.Alternatively, the first chamber in two chambers can be connected to
Two front-wheels FR and FL, remaining chamber can be connected to two rear-wheels RR and RL.As described above, the original of two chambers is independently configured
Because being the braking in order to which vehicle can also be carried out even if when one in two chambers breaks down.First hydraulic port 24a and
Two hydraulic port 24b be formed at master cylinder 20 respectively from two chambers discharge it is hydraulic from.
In addition, the first spring 21b is arranged between the first piston 21a of master cylinder 20 and second piston 22a, second spring
22b is arranged between second piston 22a and the end of master cylinder 20.That is, the first spring 21b and second spring 22b are set respectively
It sets at two chambers to store elastic force when first piston 21a and second piston 22a are compressed.As pushing first piston 21a
Power when being less than elastic force, which pushes first piston 21a and second piston 22a and makes first piston 21a and second respectively
Piston 22a returns to its home position.
In addition, the input lever 12 and first piston 21a to the first piston 21a pressurization of master cylinder 20 are in close contact so that winner
It is very close to each other between cylinder 20 and input lever 12.That is, master cylinder 20 can be pressurized directly, without stepping on when brake pedal 10 is stepped on
Plate dead-stroke section.
Simulator 50 is connected to the first standby flow path 251 (will be described below), according to the pedal of brake pedal 10
Power provides reaction force.
As shown in the figure, simulator 50 includes: simulation chamber 51, is arranged to store hydraulic from the first of master cylinder 20
The oil of mouth 24a discharge；Reaction force piston 52 is arranged in simulation chamber 51；Pedal simulator, setting is flexiblely
The reaction force spring 53 of reacting force of supporting piston 52；And analog valve 54, it is connected to the rear end of simulation chamber 51.This
When, reaction force piston 52 and reaction force spring 53 are installed to be in simulation chamber 51 respectively and the oil wherein flowed
With predetermined displacement range.
In addition, reaction force spring 53 shown in figure is only that can provide a reality of elastic force to reaction force piston 52
Mode is applied, therefore it may include many embodiments that elastic force can be stored by deformation.As an example, reaction force
Spring 53 configures including the use of the material including rubber etc. and has coil or plate shape so as to store the various of elastic force
Component.
Analog valve 54, which may be disposed at, is connected to the rear end for simulating chamber 51 at the flow path of reservoir 30.That is, simulation chamber
The entrance of room 51 is connected to master cylinder 20, and the rear end of simulation chamber 51 is connected to analog valve 54, and analog valve 54 is connected to reservoir 30.
Therefore, when reaction force piston 52 returns, the oil inside reservoir 30 can flow through analog valve 54 so that simulating chamber 51
Inside can be filled with oil completely.
This analog valve 54 is configured with the normal-closed electromagnetic valve for usually remaining off state.When driver steps down in brake pedal
When on 10, analog valve 54 is opened so that brake oil is delivered to simulation chamber 51.
In addition, simulation check-valves 55 can be installed to be and be connected to simulator 50 and reservoir 30 in parallel with analog valve 54
Between.
Simulation check-valves 55 can be configured to allow the oil inside reservoir 30 only to flow towards simulation chamber 51.That is, stepping on
The 52 compression reaction force spring 53 of reaction force piston of plate simulator is so that the oil inside simulation chamber 51 passes through analog valve
54 are transported to reservoir 30.
Therefore, because the inside of simulation chamber 51 is in the state filled with oil, so anti-when simulator 50 operates
The friction of active force piston 52 is minimized, therefore the durability of simulator 50 improves, and is additionally provided for preventing to come
The configuration entered from external foreign matter.
In addition, being mentioned inside simulation chamber 51 by simulating check-valves 55 when the pedal force of brake pedal 10 is released
Fuel feeding is to ensure the quick return of the pressure of pedal simulator.
Electric braking system in accordance with one embodiment of the present disclosure includes: hydraulic supply unit 100, by from sense
The braking intention that the pedal displacement sensor 11 of the displacement of survey brake pedal 10 receives driver as electronic signals comes mechanical
Ground operation；Hydraulic control unit 200, it is hydraulic configured with the first hydraulic circuit 201 and second for being each provided with two wheels
Circuit 202, and control the hydraulic flowing for being delivered to the wheel cylinder 40 being arranged at each wheel RR, RL, FR and FL；First cuts
Disconnected valve 261, is arranged on and the first hydraulic port 24a is connected at the first standby flow path 251 of the first hydraulic circuit 201 to control
Make hydraulic flowing；Second stop valve 262 is arranged on the second hydraulic port 24b being connected to the of the second hydraulic circuit 202
To control hydraulic flowing at two standby flow paths 252；Electronic control unit (not shown) is used for based on hydraulic information and pedal
Displacement information controls hydraulic supply unit 100 and valve 54,60,221,222,223,224,231,232,241,242,261
With 262；And damping member 300, it is arranged at the flow path that simulator 50 is connected to hydraulic supply unit 100.
Hydraulic supply unit 100 includes: hydraulic chamber 110, is arranged with receiving and storing in liquid wherein forming predetermined space
Press oil, hydraulic piston 120 and the hydraulic spring grease cup 122 inside chamber 110；Motor 140, is used in response to pedal displacement sensor
11 electric signal generates rotary force；And power converting unit 130, it is used to the rotary motion of motor 140 being converted to straight line
Movement is so that hydraulic piston 120 linearly moves.At this point, reservoir 30 and hydraulic chamber 110 are connected to each other by oil stream road 103
To supply oil to hydraulic chamber 110.Here, electronic control unit is sent to by the signal that pedal displacement sensor 11 senses
(ECU) (not shown), ECU control the motor 140 and valve (will be described below) being arranged in the electric braking system of the disclosure.
It will be described below according to the displacement of brake pedal 10 to control the operation of multiple valves.
Hydraulic chamber 110 as described above is connected to reservoir 30 by oil stream road 103, and receives simultaneously oil in reserve.Such as
Upper described, hydraulic piston 120 and the hydraulic spring grease cup 122 for being elastically supported hydraulic piston 120 are arranged on hydraulic chamber 110
In.At this point, being mounted on wheel by hydraulic be transported to by main hydraulic flow path 210 that the pressurization of hydraulic piston 120 generates
The wheel cylinder 40 at the place each of RR, RL, FR and FL.
The hydraulic piston 120 that hydraulic chamber 110 pressurizes is connected to, the rotary force of motor 140 is converted into linear motion simultaneously
And in the power converting unit 130 of 110 internal slide of hydraulic chamber.
Power converting unit 130 is the device for rotary force to be converted to linear motion, and may be configured with ball spiral shell
Stem nut component.For example, power converting unit 130 may be configured with and be integrally formed with the rotary shaft (not shown) of motor 140
Screw rod and the ball nut coupled with screw flight, wherein the rotation of ball nut is limited to be executed according to the rotation of screw rod
Linear motion.That is, screw rod is used as the rotary shaft of motor 140 and also moves ball nut linearly.At this point, hydraulic piston
120 are connected to the ball nut of power converting unit 130 to pressurize by the linear motion of ball nut to hydraulic chamber 110,
Hydraulic spring grease cup 122 is used to make hydraulic piston 120 back to its home position while ball nut returns to its home position.
In addition, although not shown in the drawings, power converting unit 130 may be configured with by receiving from the rotary shaft of motor 140
Rotary force and the ball nut rotated and the screw rod for being threadedly coupled to ball nut, wherein the rotation of screw rod is limited to basis
The rotation of ball nut executes linear motion.This ball screw nut component is for converting rotational motion into linear motion
Device, and its structure is generally known in the art, so that its detailed description will be omitted.In addition, it is to be appreciated that in addition to
Except the structure of ball screw nut component, can be used according to the power converting unit 130 of the disclosure can turn rotary motion
It is changed to any structure of linear motion.
Motor 140 is in response to generate the motor of rotary force in the signal exported from ECU, and by ECU forward
With rotary force is generated in backward directions.At this point, accurate control can be realized by controlling rotation angle or speed via motor 140
System.Since this motor 140 is generally known in the art, detailed description will be omitted.
In addition, check-valves 102 is installed at oil stream road 103 hydraulic return for preventing hydraulic chamber 110.Check-valves
102 for preventing the hydraulic return of hydraulic chamber 110, and also while hydraulic piston 120 returns oil is sucked simultaneously
It is stored in hydraulic chamber 110.
When using the electric braking system for being provided with above-mentioned hydraulic supply unit 100, returned in hydraulic piston 120, into
And during oil is sucked into hydraulic chamber 110, can be configured with prevent the pressure inside hydraulic chamber 110 not by
The case where release to atmospheric pressure.For example, forming excision hole 111 at hydraulic chamber 110, and in hydraulic chamber 110 and oil stream
Connection flow path 101 is formed between road 103 is connected to oil stream road 103 will cut off hole 111.At this point, excision hole 111 is formed in and liquid
At the corresponding position of initial position for pressing piston 120.Therefore, when hydraulic piston 120 returns, hydraulic chamber 110 passes through connection
Flow path 101 is automatically connected to reservoir 30 so that the pressure inside hydraulic chamber 110 returns to atmospheric pressure.
Hydraulic control unit 200 is configured with the first hydraulic circuit 201 and the second hydraulic circuit 202, respectively receives hydraulic
To control two wheels.As shown in the figure, the first hydraulic circuit 201 can control off-front wheel FR and left rear wheel RL, and second hydraulic time
Road 202 can control the near front wheel FL and off hind wheel RR.Wheel cylinder 40 be installed in the place each of wheel FR, FL, RR and RL and
Hydraulic braking is executed by receiving.That is, hydraulic control unit 200 is hydraulic by being connected to the first hydraulic circuit 201 and second
The main hydraulic flow path 210 in circuit 202 receives hydraulic, the first hydraulic circuit 201 and the second hydraulic circuit from hydraulic supply unit 100
202 include multiple valves 221,222,223,224,231,232,233,234,241 and 242 to control hydraulic flowing.
First hydraulic circuit 201 includes: first entrance valve 221 and second entrance valve 222, is connected to main hydraulic flow path
210 and be configured as control be delivered to the hydraulic of wheel cylinder 40；First discharge valve 231 and the second discharge valve 232, are configured as
Control the flowing of the oil discharged from the wheel cylinder 40 being arranged in the first hydraulic circuit 201；And first balanced valve 241, matched
Being set to will be connected to each other and stop between two wheel cylinders 40 that first entrance valve 221 and second entrance valve 222 are connected to.More
To say to body, first entrance valve 221 is arranged at the first hydraulic flow path 211 for being connected to main hydraulic flow path 210 and off-front wheel FR,
Second entrance valve 222 is arranged at the second hydraulic flow path 212 for being connected to main hydraulic flow path 210 and left rear wheel RL.First puts
Valve 231 is let out to be connected to the first hydraulic flow path 211 and control hydraulic, the second discharge valve discharged from the wheel cylinder 40 of off-front wheel FR
232 be connected to the second hydraulic flow path 212 and control discharged from the wheel cylinder 40 of left rear wheel RL it is hydraulic.First balanced valve, 241 quilt
It is arranged at the flow path that the first hydraulic flow path 211 is connected to the second hydraulic flow path 212, and for being grasped according to opening and closing
First hydraulic flow path 211 and the second hydraulic flow path 212 are connected to each other and are stopped by work.
Second hydraulic circuit 202 includes: third inlet valve 223 and the 4th inlet valve 224, is connected to main hydraulic flow path
210 and be configured as control be delivered to the hydraulic of wheel cylinder 40；Third discharge valve 233 and the 4th discharge valve 234, are configured as
Control the flowing of the oil discharged from the wheel cylinder 40 being arranged in the second hydraulic circuit 202；And second balanced valve 242, matched
Being set to will be connected to each other and stop between two wheel cylinders 40 that third inlet valve 223 and the 4th inlet valve 224 are connected to.More
To say to body, third inlet valve 223 is arranged at the third hydraulic flow path 213 for being connected to main hydraulic flow path 210 and off hind wheel RR,
4th inlet valve 224 is arranged at the 4th hydraulic flow path 214 for being connected to main hydraulic flow path 210 and the near front wheel FL.Third is put
Valve 233 is let out to be connected to third hydraulic flow path 213 and control hydraulic, the 4th discharge valve discharged from the wheel cylinder 40 of off hind wheel RR
234 be connected to the 4th hydraulic flow path 214 and control discharged from the wheel cylinder 40 of the near front wheel FL it is hydraulic.Second balanced valve, 242 quilt
It is arranged at the flow path that third hydraulic flow path 213 is connected to the 4th hydraulic flow path 214, and for being grasped according to opening and closing
Third hydraulic flow path 213 and the 4th hydraulic flow path 214 are connected to each other and are stopped by work.
The opening and closing of each of first to fourth inlet valve 221,222,223 and 224 are operated by ECU independently
Control is hydraulic to be delivered to wheel cylinder 40 for what is generated from hydraulic supply unit 100.That is, first entrance valve 221 and second entrance valve
222, which are configured as control, is supplied to the hydraulic of the first hydraulic circuit 201, and third inlet valve 223 and the 4th inlet valve 224 are configured
The hydraulic of the second hydraulic circuit 202 is supplied to for control.
In addition, the first balanced valve 241, which has shown and described, is connected to first entrance valve 221 and second entrance valve 222, second
Balanced valve 242 is connected to third inlet valve 223 and the 4th inlet valve 224, but its is without being limited thereto.Alternatively, the first balanced valve
241 can be the two entrances valve in first to fourth inlet valve 221,222,223 and 224, and the second balanced valve 242 can connect
To remaining two entrances valve.That is, the first balanced valve 241 can be connected to first entrance valve 221 and third inlet valve 223 or connection
To first entrance valve 221 and the 4th inlet valve 224.It should be understood that balanced valve 241 and 242 and inlet valve 221,222,223 and
This connection structure between 224 selectively can be changed and be used with the configuration of system according to the demand of user.
The opening and closing of each of first to fourth inlet valve 221,222,223 and 224 are operated by ECU independently
It controls and is configured as hydraulic being delivered to wheel cylinder 40 for what is generated from hydraulic supply unit 100.That is, 221 He of first entrance valve
Second entrance valve 222 is configured as control and is supplied to the hydraulic of the first hydraulic circuit 201, third inlet valve 223 and the 4th entrance
Valve 224 is configured as control and is supplied to the hydraulic of the second hydraulic circuit 202.
In addition, the opening and closing of each of first to fourth discharge valve 231,232,233 and 234 are operated by ECU
It independently controls, the first discharge valve 231 and the second discharge valve 232 are configured as controlling the wheel cylinder 40 from the first hydraulic circuit 201
That discharges is hydraulic, and third discharge valve 233 and the 4th discharge valve 234 are configured as controlling the wheel cylinder 40 from the second hydraulic circuit 202
That discharges is hydraulic.
In accordance with one embodiment of the present disclosure, it can be arranged so that in four inlet valves 221,222,223 and 224
Two entrances valve is opened, so that the hydraulic wheel cylinder 40 for being transported to each of wheel FR, FL, RR and RL.For example, as schemed
Shown in 2, the first entrance valve 221 in first entrance valve 221 and second entrance valve 222 is opened, and third inlet valve 223 and the 4th enters
The 4th inlet valve 224 in mouth valve 224 is opened so that the hydraulic wheel for being transported to each of wheel FR, FL, RR and RL
Cylinder 40.That is, passing through the first balanced valve 241 and the second balanced valve across first entrance valve 221 and the hydraulic of the 4th inlet valve 224
242 are transported to adjacent wheel cylinder 40.At this point, show the first hydraulic circuit 201 and the second hydraulic circuit 202 makes inlet valve respectively
221 and 224 open to be delivered to each wheel cylinder 40 for hydraulic, but its is without being limited thereto.Alternatively, the knot connected according to flow path
Structure, the two entrances valve 221 and 222 being arranged in the first hydraulic circuit 201 and be arranged in the second hydraulic circuit 202 two
A inlet valve 223 and 224 is openable to be delivered to each wheel cylinder 40 for hydraulic.In addition, when needing emergency braking, all entrances
Valve 221,222,223 and 224 are openable to be rapidly delivered to wheel cylinder 40 for hydraulic.
Such first to fourth inlet valve 221,222,223 and 224 using it is normally closed and when receive opening letter
Number when open normal-closed electromagnetic valve configuration.
In addition, the first balanced valve 241 and the second balanced valve 242 are using normally open and when receiving closing letter from ECU
Number when the normal-open electromagnetic valve configuration closed, first to fourth discharge valve 231,232,233 and 234 is using normally closed and work as
The normal-closed electromagnetic valve configuration opened when receiving opening signal.
According to the one side of the disclosure, the first standby flow path 251 and the second standby flow path 252 are arranged to work as electric braking
The oil discharged from master cylinder 20 is supplied to wheel cylinder 40 when operating to system exception.More particularly, for controlling oily flowing
First stop valve 261 is arranged at the first standby flow path 251, is set for controlling the second stop valve 262 of flowing of oil
At the second standby flow path 252.In addition, the first hydraulic port 24a is connected to the first hydraulic circuit 201 by the first standby flow path 251,
Second hydraulic port 24b is connected to the second hydraulic circuit 202 by the second standby flow path 252.As shown in the figure, the first standby flow path
251 are connected to the first balanced valve 241 that the first hydraulic flow path 211 is connected to the second hydraulic flow path 212, the second standby flow path
252 are connected to the second balanced valve 242 that third hydraulic flow path 213 is connected to the 4th hydraulic flow path 214.First stop valve 261
It will be described again below with the operation structure of the second stop valve 262.
First stop valve 261 and the second stop valve 262 using it is normally open and when receiving shutdown signal from ECU pass
The normal-open electromagnetic valve configuration closed.
In addition, the label " PS1 " not described is the hydraulic first pressure sensor for sensing wheel cylinder 40, the label not described
" PS2 " is the second pressure sensor for sensing the oil pressure of master cylinder 20.
It is formed and the front end of the first stop valve 261 is connected to the pulsation flow path 315 of hydraulic chamber 110 to provide to driver
In the pressure fluctuation that ABS control period generates, and damping member 300 is arranged at pulsation flow path 315.
For example, the side of damping member 300 can be connected to simulation chamber 51, it is connected to the front end of the first stop valve 261
First standby flow path 251, or it is connected to the chamber of master cylinder 20.That is, the side when damping member 300 is connected to the first stop valve
When 261 front end, the pulsation of hydraulic chamber 110 can be transported to brake pedal 10.
In addition, the side for showing damping member 300 in figure is connected to the rear end of reaction force piston 52.Alternatively, may be used
Include the case where such: the side of damping member 300 is connected to the front end of reaction force piston 52.
Further it is provided that pulsation flow path 315 is as the closed circuit between simulation chamber 51 and hydraulic chamber 110.Pass through this
Kind of damping member 300 by pressure fluctuation be conveyed to the structure of driver by below under the mode of operation according to abs mode in detail
Thin description.
Hereinafter, will be described in the operation of electric braking system in accordance with one embodiment of the present disclosure.
Fig. 2 is hydraulic time of state for showing electric braking systems in operation in accordance with one embodiment of the present disclosure
Lu Tu.
Referring to Fig. 2, when driver starts braking, the requested braking amount of driver can pass through pedal displacement sensor 11
It is sensed based on including the information of pressure for being applied to brake pedal 10 by driver etc..ECU (not shown) is received from pedal position
The electric signal that displacement sensor 11 exports is with operation motor 140.
In addition, ECU can be each by the way that the second pressure sensor PS2 of the outlet side of master cylinder 20 is arranged in and for sensing
The first pressure sensor PS1 of the pressure of wheel cylinder 40 receives regenerative braking amount, and can be based on the requested braking amount of driver
And the difference of regenerative braking amount calculates drag friction amount, so that it is determined that pressure increase or reduced size at each wheel cylinder 40.
In particular, motor 140 is operated when the initial stage driver of braking steps down on brake pedal 10, electricity
The rotary force of machine 140 is converted to linear motion by power converting unit 130, and hydraulic piston 120 travels forward to hydraulic chamber
110 pressurizations are hydraulic to generate.That is, hydraulic the by being each attached to main hydraulic flow path 210 discharged from hydraulic chamber 110
One to the 4th hydraulic flow path 211,212,213 and 214 is transported to wheel cylinder 40.At this point, being separately mounted to be respectively connected to first
The first standby flow path 251 of hydraulic port 24a and the second hydraulic port 24b and 261 He of the first stop valve at the second standby flow path 252
Second stop valve 262 is shut off such that generate in master cylinder 20 hydraulic is not transported to wheel cylinder 40.
In addition, the hydraulic opening quilt according to first entrance valve 221 and the 4th inlet valve 224 generated from hydraulic chamber 110
The wheel cylinder 40 of off-front wheel FR and the near front wheel FL are delivered to generate brake force.Meanwhile passing through first entrance valve 221 and the 4th entrance
The hydraulic of the conveying of valve 224 is transported to left rear wheel RL and off hind wheel by open the first balanced valve 241 and the second balanced valve 242
The wheel cylinder 40 of RR.That is, hydraulic 221 and of two entrances valve by being selected in four inlet valves 221,222,223 and 224
224 opening operation is supplied to all wheel cylinders 40.
This operation is general brake operating, and when needing emergency braking, all inlet valves 221,222,223 and 224 can
It opens to be rapidly delivered to wheel cylinder 40 for hydraulic.
It is connected in addition, being transported to by master cylinder 20 according to the pressure that the pressurization of the pedal force of brake pedal 10 generates
The simulator 50 of master cylinder 20.At this point, the closed type analog valve 54 that the rear end of simulation chamber 51 is arranged in is opened so that filling
Oil in simulation chamber 51 is transported to reservoir 30 by analog valve 54.In addition, reaction force piston 52 moves, simulating
Corresponding with the reaction force of reaction force spring 53 of reacting force of supporting piston 52 pressure is generated inside chamber 51 with to driving
The person's of sailing offer is appropriate to trample sense.
Next, the on-position that will be established referring to Fig. 3 description when electric braking system normally operates as described above
The case where lower release brake force.As shown in figure 3, when the pedal force for being applied to brake pedal 10 is released, motor 140 with it is hydraulic
It is compared when piston 120 travels forward to move backward and generates rotary force in the opposite direction and return to hydraulic piston 120
Its home position.At this point, first to fourth inlet valve 221,222,223 and 224, first to fourth discharge valve 231,232,233
With 234 and first balanced valve 241 and the second balanced valve 242 opening and closing mode of operation according to them in brake operating
In identical mode control.That is, first to fourth discharge valve 231,232,233 and 234 and second entrance valve 222 and third
Inlet valve 223 is closed, and first entrance valve 221 and the 4th inlet valve 224 are opened.As a result, from the wheel cylinder of the first hydraulic circuit 201
40 the hydraulic of discharge are transported to inside hydraulic chamber 110 by the first balanced valve 241 and first entrance valve 221, from the second liquid
The hydraulic of the discharge of wheel cylinder 40 for pushing back road 202 is transported to hydraulic chamber by the second balanced valve 242 and the 4th inlet valve 224
Inside 110.
In simulator 50, the oil inside chamber 51 is simulated according to original back to its by reaction force spring 53
The reaction force piston 52 of position is transported to master cylinder 20, and oil is by being connected to the analog valve 54 of reservoir 30 and simulating check-valves
55 refill the quick return for ensuring the pressure of pedal simulator inside simulation chamber 51.
In addition, when hydraulic piston 120 is moved by the hydraulic supply unit 100 of electric braking system, hydraulic chamber
Oily flowing through inside 110 is connected to oil stream road 103 and the connection flow path 101 of reservoir 30 to control.
In addition, electric braking system in accordance with one embodiment of the present disclosure can be according to two hydraulic circuits 201 and 202
The setting of the place each of wheel RR, RL, FR and FL wheel cylinder 40 needed for pressure be arranged to control in hydraulic control list
Valve 221,222,223,224,231,232,233,234,241 and 242 at member 200, to specify and control control range.Example
Such as, Fig. 4 shows the case where only braking corresponding wheel cylinder while ABS operation, shows the state for only braking left wheel FL and RL.
Referring to Fig. 4, motor 140 is operated according to the pedal force of brake pedal 10, and the rotary force of motor 140 is converted into directly
Line movement, and hydraulic piston 120 travels forward to pressurize to hydraulic chamber 110, to generate hydraulic.At this point, the first cutting
Valve 261 and the second stop valve 262 are closed, therefore what is generated in master cylinder 20 hydraulic is not transported to wheel cylinder 40.In addition, first enters
Mouthful valve 221 and third inlet valve 223, first to fourth discharge valve 231,232,233 and 234 and the first balanced valve 241 and the
Two balanced valves 242 are controlled to close.Therefore, from hydraulic being transported to by second entrance valve 222 of the generation of hydraulic chamber 110
The wheel cylinder 40 of left rear wheel RL, the wheel cylinder 40 of the near front wheel FL is transported to by the 4th inlet valve 224.Therefore, hydraulic only to be conveyed
Left wheel RL and FL in wheel RL, RR, FL and FR.
According to the one side of the disclosure, first to fourth inlet valve 221,222,223 and 224, first to fourth discharge valve
231,232,233 and 234 and first the operation of balanced valve 241 and the second balanced valve 242 can control independently as outlined above, with
So that hydraulic be only delivered to rear wheel RR and RL, or can be transported to need hydraulic off-front wheel FR and off hind wheel RR or
The wheel cylinder 40 of person's off-front wheel FR and left rear wheel RL.
In addition, ought be hydraulic when being only delivered to left wheel RL and FL as described above according to the sliding of vehicle, enter according to second
The opening operation of mouth valve 222 and the 4th inlet valve 224 generates pressure fluctuation.At this point, due to the first stop valve 261 and the second cutting
Valve 262 is arranged on closed state, so pressure fluctuation is not over being respectively connected to the first balanced valve 241 and the second balanced valve
242 the first standby flow path 251 and the second standby flow path 252 are transported to master cylinder 20.Therefore, pressure fluctuation is by being connected to
The main hydraulic flow path 210 of two hydraulic flow paths 212 and the 4th hydraulic flow path 214 is transported to hydraulic chamber 110.More particularly,
The flowing of discharge pressure pulsation will be described referring to Fig. 5.
As described above, the pressure fluctuation generated under abs mode is transported to hydraulic chamber by main hydraulic flow path 210
110.At this point, the part of the instruction discharge pressure pulsation of arrow shown in Fig. 5.This pressure fluctuation passes through 110 quilt of hydraulic chamber
It is delivered to damping member 300.At this point, the damper 310 being arranged at damping member 300 moves, therefore pressure fluctuation passes through company
The pulsation flow path 315 for meeting hydraulic chamber 110 and simulation chamber 51 is transported to simulation chamber 51.Due to providing flow path 315 of pulsing
As the closed circuit between simulation chamber 51 and hydraulic chamber 110, so pressure fluctuation can be easily delivered to simulation chamber
Room 51.More particularly, pressure fluctuation leads to per second tens or several hundred a waves, therefore damper 310 is resiliently deformed and hinders
Volume change inside Buddhist nun's component 300.Therefore, hydraulic in simulation chamber 51 inside flow path 315 of pulsing according to the variation of volume
It repeatedly flows into and discharges between damping member 300.Therefore, the reaction force piston 52 inside chamber 51 is simulated according to oil
It flows and moves, therefore pressure fluctuation is transported to master cylinder 20.That is, passing through the braking for the first piston 21a for being connected to master cylinder 20
Pressure fluctuation is conveyed to driver by pedal 10.
Further there is illustrated in abs mode controls analog valve 54 be in off state from opening state switching, but this is only
One example can transport pressure fluctuation even if analog valve 54 is set in the open mode.
In addition, electric braking system according to the one side of the disclosure can by first to fourth discharge valve 231,232,
233 and 234 discharges are supplied to the brake pressure of its correspondence wheel cylinder 40.For example, Fig. 6 shows electric braking system in drainage mode
Lower operation shows the state that drainage is carried out to left wheel RL and FL to discharge the hydraulic situation of corresponding wheel cylinder 40.
Referring to Fig. 6, second entrance valve 222 and the 4th inlet valve 224, the first discharge valve 231 and third discharge valve 233 and
First balanced valve 241 and the second balanced valve 242 are controlled to be in close state, the second discharge valve 232 and the 4th discharge valve 234
It opens.As a result, the wheel cylinder 40 from being mounted on left rear wheel RL and the near front wheel FL discharge it is hydraulic by the second discharge valve 232 and
Four discharge valves 234 are transported to reservoir 30.
At this point, in addition to the second discharge valve 232 and the 4th discharge valve 234 are opened to discharge the hydraulic drainage of corresponding wheel cylinder 40
Except mode, first entrance valve 221 and third inlet valve 223 are openable with hydraulic to off-front wheel FR and off hind wheel RR supply.
As described above, 221,222,223,224,231,232,233,234,241 and of each valve of hydraulic control unit 200
242 can be independently controlled with according to required pressure selectively to the wheel cylinder 40 of each of wheel RL, RR, FL and FR
Convey it is hydraulic or hydraulic from its discharge so that hydraulic accurate control can be carried out.
Finally, the case where description electric braking system exception is operated.Referring to Fig. 7, when electric braking system exception
When operation, each valve 54,221,222,223,224,231,232,233,234,241,242,261 and 262 is arranged on braking
Original state, that is, non-mode of operation.When driver pressurizes to brake pedal 10, it is connected to the input lever of brake pedal 10
The 12 first piston 21a for moving upwards, while contacting to the left with input lever 12 are being moved upwards to the left, and second is living
Plug 22a is also being moved upwards to the left by first piston 21a.At this point, due to not having between input lever 12 and first piston 21a
Gap, so braking can be performed quickly.That is, being generated by the pressurization of master cylinder 20 hydraulic by order under backup mode
The the first standby flow path 251 and the second standby flow path 252 braked and connected are transported to wheel cylinder 40 to realize brake force.At this point,
The first stop valve 261 and the second stop valve 262 being separately mounted at the first standby flow path 251 and the second standby flow path 252 with
And it is separately mounted to the first balanced valve 241 and the second balanced valve 242 at the first standby flow path 251 and the second standby flow path 252
It is configured using normal-open electromagnetic valve, analog valve 54, first to fourth inlet valve 221,222,223 and 224 and first to fourth
Discharge valve 231,232,233 and 234 is configured using normal-closed electromagnetic valve, so that hydraulic be fed directly to wheel cylinder 40.Therefore,
It is executable to stablize braking to improve braking safety.
As is apparent from the above description, electric braking system in accordance with one embodiment of the present disclosure is provided with peace
Mounted in the damping being connected to the simulator for providing pedal force to driver at the flow path for generating hydraulic hydraulic supply unit
Component, and the pressure fluctuation generated in ABS control period is conveyed to so that driver by driver by the damping member
Demand can be satisfied.
In addition, the connection structure of damping member is simplified, so that can be in the modulation for not increasing configuration electric braking system
Damping member is installed in the case where the size of device block.
In addition, motor and valve are interlocked with one another and control, to have the effect of that accurately controlling for pressure can be carried out.In addition,
Two hydraulic circuits are respectively configured as being connected to two wheels and be independently controlled, and hydraulic supply unit is according to each
Pressure needed for a wheel and it is preferential determine logic interlock and control with two hydraulic circuits, thus with control can be increased
The advantages of range.
In addition, the pedal force of driver can be fed directly to master cylinder to allow when electric braking system jam
The braking of vehicle, to can provide stable brake force.
As described above, although describing the disclosure by particular implementation and attached drawing, it is without being limited thereto, it should be appreciated that
It may occur to persons skilled in the art that spirit and scope of the present disclosure will be fallen into and the appended claims are obtained complete
Many other changes and modification in equivalency range.
This application claims on December 4th, 2015 to be filed in the South Korea patent application No.10-2015- of Korean Intellectual Property Office
0172060 equity, the disclosure is incorporated herein by reference.
Claims (14)
1. a kind of electric braking system, the electric braking system include:
Master cylinder, the master cylinder are configured to connect to the wherein reservoir of oil in reserve and are configured as the pedal according to brake pedal
Power is hydraulic to generate；
At least one stop valve, at least one described stop valve are installed in the standby flow path that the master cylinder is connected to wheel cylinder
Place；
Simulator, the simulator include simulation chamber and analog valve, and the simulation chamber is at least one described stop valve
Front end at be connected to the master cylinder to provide reaction force according to the pedal force of the brake pedal and be configured
Wherein to store the oil, the analog valve, which is arranged on, is connected to the simulation chamber for the master cylinder or by the simulation
Chamber is connected at the flow path of the reservoir；
Hydraulic supply unit, the hydraulic supply unit are configured to respond to sense the pedal displacement of the displacement of the brake pedal
The electric signal of sensor and operate, and will be generated and hydraulic chamber to the reservoir for being connected to oil in reserve pressurizes
Hydraulic be delivered to the wheel cylinder；And
Damping member, the damping member be arranged on by the hydraulic chamber be connected at least one stop valve it is described before
At the flow path at end,
Wherein, the pressure arteries and veins that the damping member will generate under anti-lock brake system abs mode in the hydraulic chamber
It is dynamic to be delivered to the brake pedal, and
Wherein, the rear end of the simulation chamber of the simulator is concurrently arranged in the analog valve and simulation check-valves
At the flow path that portion and the reservoir are connected to.
2. electric braking system according to claim 1, wherein the side of the damping member is connected to the hydraulic cavities
Room, the other side of the damping member are connected to the simulation chamber.
3. electric braking system according to claim 2, wherein the analog valve be arranged to make in the normal mode by
The flow path that the simulation chamber is connected to the reservoir is opened, and makes for the simulation chamber to be connected under abnormal patterns described
The flow path of reservoir is closed, and the analog valve selectively opens or closes under the abs mode to convey
The pressure fluctuation needed.
4. electric braking system according to claim 1, the electric braking system further include:
Hydraulic control unit, the hydraulic control unit include first hydraulic time that the hydraulic supply unit is connected to by flow path
Road and the second hydraulic circuit, and be configured as receiving and be set from hydraulic be transported to control of hydraulic supply unit discharge
Set the hydraulic flowing of the wheel cylinder at each wheel；And
Electronic control unit, the electronic control unit be configured as the displacement information based on hydraulic information and the brake pedal come
Motor and valve are controlled,
Wherein, the master cylinder has the first hydraulic port for being connected to first hydraulic circuit and to be connected to described second hydraulic
Second hydraulic port in circuit, and
Wherein, the hydraulic supply unit is configured such that the motor in response to exporting from the pedal displacement sensor
The electric signal and operate, and generated by the way that the rotary force of the motor is converted to linear motion described hydraulic.
5. electric braking system according to claim 4, wherein the hydraulic control unit includes:
First entrance valve to the 4th inlet valve, the first entrance valve to the 4th inlet valve is respectively set at the upper of the wheel cylinder
It swims side and is configured as the described hydraulic of the wheel cylinder that control flow direction is mounted at each wheel；
First discharge valve to the 4th discharge valve, first discharge valve to the 4th discharge valve are configured to control from the wheel
The hydraulic flowing of cylinder discharge；And
First balanced valve and the second balanced valve, first balanced valve and second balanced valve are respectively set at described first
Inlet valve is to the 4th inlet valve and first discharge valve between the 4th discharge valve, wherein first balanced valve is connected to
Two entrances valve in the first entrance valve to the 4th inlet valve, second balanced valve are connected to remaining two entrances
Valve.
6. electric braking system according to claim 5, wherein two to be connected to each other by first balanced valve enter
One in mouthful valve and an opening in the two entrances valve that is connected to each other by second balanced valve, so that described
It is hydraulic to be transported to the wheel cylinder being mounted at each wheel.
7. electric braking system according to claim 5, wherein the first entrance valve to the 4th inlet valve is using usually
It closes and the normal-closed electromagnetic valve opened when receiving opening signal configures.
8. electric braking system according to claim 5, wherein first discharge valve to the 4th discharge valve is using usually
It closes and the normal-closed electromagnetic valve opened when receiving opening signal configures.
9. electric braking system according to claim 5, wherein first balanced valve and second balanced valve utilize
The normally open and normal-open electromagnetic valve closed when receiving shutdown signal from the electronic control unit configures.
10. electric braking system according to claim 5, the electric braking system further include:
First standby flow path, by described when which is configured as operating when the electric braking system exception
One hydraulic port is connected to first balanced valve directly to supply oil to the wheel cylinder；And
Second standby flow path, the second standby flow path are configured as second hydraulic port being connected to second balanced valve,
Wherein, at least one described stop valve includes:
First stop valve, first stop valve are arranged at the first standby flow path and are configured as controlling the oil
Flowing；And
Second stop valve, second stop valve are arranged at the second standby flow path and are configured as controlling the oil
Flowing.
11. electric braking system according to claim 10, wherein first stop valve and second stop valve benefit
It is configured with normal-open electromagnetic valve that is normally open and being closed when receiving shutdown signal from the electronic control unit.
12. electric braking system according to claim 1, wherein the hydraulic supply unit includes:
Motor, the motor are configured to respond to the electric signal of the pedal displacement sensor and generate rotary force；
Power converting unit, the power converting unit are configured as the rotary force of the motor being converted to linear motion；
Hydraulic piston, the hydraulic piston are connected to the power converting unit and are configured as executing linear motion；
Hydraulic chamber, the hydraulic chamber are arranged to slide the hydraulic piston wherein and be connected to by hydraulic flow path
First hydraulic circuit and the second hydraulic circuit；And
Hydraulic spring grease cup, the hydraulic spring grease cup are arranged on inside the hydraulic chamber and are configured as being elastically supported described hydraulic
Piston,
Wherein, the hydraulic chamber is configured as being connected to the reservoir by hydraulic fluid port and receives the oil.
13. electric braking system according to claim 12, wherein be connected in the outlet side formation of the hydraulic chamber
The intercommunicating pore of the reservoir, and check-valves be arranged at the flow path for being connected to the intercommunicating pore and the reservoir and
It is configured such that the oil can flow to the hydraulic chamber from the reservoir and prevent the oil from the hydraulic cavities
Room flows to the reservoir.
14. electric braking system according to claim 1, wherein the analog valve utilizes normally closed and works as reception
The normal-closed electromagnetic valve opened when to opening signal configures.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150172060A KR102480676B1 (en) | 2015-12-04 | 2015-12-04 | Electric brake system |
| KR10-2015-0172060 | 2015-12-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107010024A CN107010024A (en) | 2017-08-04 |
| CN107010024B true CN107010024B (en) | 2019-11-01 |
Family
ID=58722573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611181801.8A Active CN107010024B (en) | 2015-12-04 | 2016-12-05 | Electric braking system |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10286885B2 (en) |
| KR (1) | KR102480676B1 (en) |
| CN (1) | CN107010024B (en) |
| DE (1) | DE102016224052B4 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6439170B2 (en) * | 2015-02-17 | 2018-12-19 | 日立オートモティブシステムズ株式会社 | Brake device |
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Also Published As
| Publication number | Publication date |
|---|---|
| US10286885B2 (en) | 2019-05-14 |
| KR102480676B1 (en) | 2022-12-23 |
| DE102016224052B4 (en) | 2024-01-11 |
| US20170158179A1 (en) | 2017-06-08 |
| KR20170065829A (en) | 2017-06-14 |
| DE102016224052A1 (en) | 2017-06-08 |
| CN107010024A (en) | 2017-08-04 |
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